Electric lamp and discharge devices: systems – Cathode ray tube circuits – Cathode-ray deflections circuits
Patent
1988-08-26
1989-12-19
Blum, Theodore M.
Electric lamp and discharge devices: systems
Cathode ray tube circuits
Cathode-ray deflections circuits
H01J 2956
Patent
active
048885290
ABSTRACT:
A television receiver which includes an arrangement for the suppression of a line flicker having a detector unit for detecting a potenting line flicker producing operation of the television receiver and a control unit responsive to a detection signal from the detector unit for producing a correction signal to a vertical deflection system of a picture reproducing unit of the television receiver whereby a line track of the picture spot is displaced upwardly or downwardly to a location near or nearer a line level of a corresponding neighboring line in a proceeding half-picture. The detector unit provides a continuous detection of a difference between an intensity of an actual video signal and an intensity of the actual video signal reproduced in a picture spot and at least an overlying or underlying line on a television screen. The control unit is adapted to produce a correction signal only upon a detection by the detector unit that the picture spot is moved along a line portion forming a horizontal line of separation between an overlying picture area and an underlying picture area of a pronounced differing light intensity.
Madsen Knud E.
Nielsen Runo R.
Bang & Olufsen A/S
Blum Theodore M.
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